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 ###Instrução: Conte a soma de Col (m) que tem uma Elevação (m) de 3.011 e um País de Guiné Equatorial (Bioko)?
 ###Tabelas: CREATE TABLE match_attendance (match_attendance_id AUTO_INCREMENT PRIMARY KEY, Venue VARCHAR, Hosted INT, Average INT, Highest INT, Lowest INT, Total INT, Last Year VARCHAR, Up/Down VARCHAR) CREATE TABLE  (_id AUTO_INCREMENT PRIMARY KEY, Peak VARCHAR, Country VARCHAR, Elevation (m) INT, Prominence (m) INT, Col (m) INT) CREATE TABLE e (e_id AUTO_INCREMENT PRIMARY KEY, Player VARCHAR, Nationality VARCHAR, Jersey Number(s) VARCHAR, Position VARCHAR, Years VARCHAR, From VARCHAR) CREATE TABLE incidents_and_accidents (incidents_and_accidents_id AUTO_INCREMENT PRIMARY KEY, Date VARCHAR, Flight VARCHAR, Aircraft VARCHAR, Registration VARCHAR, Location VARCHAR, Fatalities INT) CREATE TABLE list_of_the_most_populous_us_counties_sorted_according_to_the_mid-2011_official_estimate_by_the_uscb (list_of_the_most_populous_us_counties_sorted_according_to_the_mid-2011_official_estimate_by_the_uscb_id AUTO_INCREMENT PRIMARY KEY, Rank VARCHAR, County VARCHAR, State VARCHAR, Land area (km²) VARCHAR, Land area (mi²) VARCHAR, April 1, 2010 census VARCHAR, April 1, 2010 density (/km²) VARCHAR, April 1, 2010 density (/mi²) VARCHAR, July 1, 2010 official estimate VARCHAR, July 1, 2010 density (/km²) VARCHAR, July 1, 2010 density (/mi²) VARCHAR, July 1, 2011 official estimate VARCHAR, July 1, 2011 density (/km²) VARCHAR, July 1, 2011 density (/mi²) VARCHAR, Mid-2010 to mid-2011 change (Absolute) VARCHAR, Mid-2010 to mid-2011 change (%) VARCHAR, County seat or courthouse VARCHAR)  
SELECT SUM Col (m) FROM  WHERE Elevation (m) = 3,011 AND Country = equatorial guinea ( bioko )